Quickly-detachable connection between members and supporting shafts



I 1,520,128 A F.}H. M. HART QUICKLY DETACHABLE CONNECTION BETWEEN MEMBERS AND SUPPORTING SHAFTS .Fil ed Dec. 16, 1922 z] 2- 23 I 10 J 4: 8 H E 7 v 4 Patented Dec. 23, 1924 FREDERICK H. IVI. HART, OF POUG-I-IKEEPSIE, NEW YORK, ASSIGNOB. TO 3'. RI. SHORT MILLING GOMPANY, A CORPORATION OF ILLINOIS.

" QUICKLY-DETACHABLE CONNECTION BETWEEN MEMBERS AND SUPPOB'IING SHAETS.

- Application filed December 16, 1922 Serial No; 607,457.

T all whom it may concern: I

Be it known that I, Fnnnnnion H. M. HART, a citizen of the United States, residing at Poughkeepsie, county of Dutchess. 6 "State of New York, haveinvented a certain new and useful Improvement in Quickly- Detach'able Connections Between Members and Supporting Shafts, and declare the fol I lowing-to be a full, clear, and )IElCt description of the same, such as will enable others skilled in the art to which it pertains to 'make' and use the same, reference: being had to the accompanyingdrawing, which forms a part of this specification.

'It'is often necessary or desirable to remove a brushand agitator; or other element rotatabletv'ith' a supporting shaft; for the purposeof cleaning, 'repair or replacement, without disturbing the shaft. The object-=of'thepresent invention is to produce-a simple and novel means for attaching such an. ele'me'ntto a shaft in such a mannerfthat it may quickly and easily be secured-in =place, remain firmly locked to the shaft after being attached thereto and be readily removable or detachable when it isdesi'red to 'disconne' ct' the same from the shaft.

The various features of novelty whereby my invention ischaratterized will hereinafter he pointed out with particularity in the claims; but for a full understanding of my invention and of its objects and' advantages reference may behad to the following detailed description taken lIlCOIlllBCtlOll with the accompanying drawing wherein:

-Figu're 1 is an elevation of a fragment of a shaft supporting an agitator and a brush i fastened 'thereto in accordance with the LO -present invention Figr- 2 is a top plan view of the devices shown in Fig; hone end of thelocking ele- "ment or bar being broken away;

- Fig. 3 1s an end view of the devices shown the notches" therein 5' and h Fig. 6 -isa sectional view-of a=mod1fied 'fo'r'm' of brush or feeding device.

Referrinqto the drawing, 1 and 2 represent end pieces and 3 and 4 the sides of a fi rectan'gular frame, E'achend-pie'ce has at 1 the middle thereof an ear 5 projecting 'at right angles to the plane of the frame and provided with a slot 6 extending-lengthwise thereof. A brush 7 or other feeding device is adjustably attached to the cars by means" of holding screws 8 passing"through the feeding device and the slots in the ears. On the opposite side of each of the frame members l and 2, from that'onwhich the 'ear5 is located is an open seat 9 coaxial with the corresponding seat'at the' other endof the frame and adapted to receive a supporting shaft 10. At opposite sides ofeach' of the seats and preferably formed integral with the corresponding frame member are npwardly-projecting lugs 11; these lugs being undercut, that is, providedwith notches 12, in their inner sides or edges. In other words, eaclrpair of lugsis provided" with over-hanging shouldersbr undercut f portions, facing the other lugs. The shaft-has sections cut away 1n one side thereof to form two notches 13 spaced apart a distance equal approximately to the length-of the frame;

the depth of the notches being prefer-ably such that the flattened surfaces produced thereby on the shaft do not lie below the plane of those portions ldon the upper sur face of the end members of the frame "lying adjacent to the bearings -or seats beyond the ends of the frame, the headsor blockswill" fit into the notches orundercut portions' of the lugs; and. if the shaft is' resting in the seats in the frame with the notches"- directed outwardly and lying at the inner end of each seat, the heads on thelocking eleinent will rest within the] notches in theg-shaft' aswell as in thei notchesNo'r' undercuts irf-theLlu'gs. and thus lock the frame tipon:t-he shaft.

My improved arrangement not only serves to lock the frame to the shaft 'so asbto kee'p it from rotating thereon or"-dr'opping there- 'from in[ a radial direction,"but italsolocks the frame and the shaft together against relative movements in the direction-of the length of the shaft.

By making the body of the locking element out of spring metal, the locking element may be} placed in position or be removed by the mere act of flexing the spring member so as to draw the heads or keys at the ends thereof towards each other, thus permittii'ig. the heads or keys to be detached from the notches in the lugs or to be brought into registration with such notches so as to be iniposition to enter the same when the spring member is straightened.

Midway between the ends of the spring locking strip I have arranger, U-shaped clip 17 ofspring metal, which is adapted to be pressed over and grip the shaft when the parts are assembled and the locking" element is in its locking portion. 1

In Fig. 6 I have shown a modified form. of brush orfeeding device, the same consisting of a strip-of leather l8 clamped between two thin bars or plates 19 of metal; the clamping plates in the leather being held together by means of'suitable holding screws 20 passing'throughjthe clamping plates and through elongated slots 21 in the leather. The slots permit the leather to be adjusted relatively to the clamping and holding plates as wear occurs.

It will thus be seen that I have produced a simple and effective means; for detachably looking a member to a supporting shaft so that it may quickly and easily be removed or replaced without affecting the shaft itself. The particular embodiment of my invention illustrated in the drawing is an agitator and feeding device adapted to be mounted in a so-called dusting boa from which flour is sprinkled or dusted on dough or machinery in bakeries; and it will be seen that my invention permits the agitator and feeding device to be taken out at will without the use of tools of any kind and without disturbing or even disconnecting the shaft. The invention may therefore be said to be particularly applicable to situations in which quick and easy detachment of" apart from a supporting shaft, without requiring the use of tools, is desired.

lVhile I have illustrated and described with particularity,-only a single preferred form of my invention, with a slight modification, I do not desire to be limited to the exact, structural details thus illustrated and described; but intend to cover all forms and arrangements which come within the terms employed in the definitions of my invention constituting the appended claims.

I claim:

1. In combination, a member having two separated co-aXial open seats and lugs beside and projecting above the seats, the lugs adjacent to each seat being undercut on the side facing the other seat, a shaft adapted to fit into said seats and having in one side notches spaced apart a distance the side facing the other seat, a shaft adapted to fit into said seats and having in one side notches spaced apart a distance approx imatcly equal to said seats, a locking ele ment comprising a leaf spring having at the ends heads adapted to fit into the notches in the shaft and into the opposed undercut portions of the lugs, and a clip attached to the middle of a said locking elementand adapted to grip said shaft when the parts are assembled and the locking element is in its locking position.

3. In combination a frame having at opposite ends coaxial separated open seats and lugs on opposite sides of and projecting above each seat, the lugs at both ends of the frame being undercut on the inner side, a shaft adapted to rest in said seats and having in one side notches spaced apart a distance approximately equal to the length of the frame, and a locking ele ment approximately as long as the frame and having at the ends heads each adapted to engage in one of the notches in the shaft and simultaneously engage with the undercut portions of the lugs at one end of the frame.

4-. In combination, a shaft, amember having separated open seats partially surrounding the shaft, said member having undercut lugs projecting therefrom beside said seats,'said shaft having flattened portions adjacent to said lugs, and a locking device. having at the ends keys fitting over said flattened portions of the shaft and under said undercut lugs.

5. In combination, ashaft, a member having separated open seats partially snrrounding the shaft, said member having undercut lugs projecting therefrom on opposite sides of said seats, the shaft having flattened portions at said seats and a locking element of a length to lit between and interlock with. the two sets of lugs, the ends of said element being shaped to bear on said flattened portions of the shaft when in looking position and prevent relative rotation between the shaft and said member.

6. In combination, a shaft, a member having a seat partially surrounding the shaft, said shaft having flattened portions, separated lugs projecting from said members adjacent to said flattened portions of the shaft, and having shoulders overhanging said flattened portions, a locking element having parts underlying said shoulders and engaging herewith and with said flattened portions.

7 In combination, a member having two separated coaxial open seats and lugs beside and projecting above said seats, the lugs adjacent to each seat being undercut on the side facing the other seat, a shaft adapted to rest in said seat, and a locking member adapted to extend between said seats and fit at its ends into the undercut portions of said lugs.

8. In combination, a member having two separated coaxial open seats and lugs beside and projecting above said seats, the lugs adjacent to each seat being undercut on the side facing the other seat, a shaft adapted to rest in said seats and having transverse notches in one side spaced apart a distance equal to the distance between said seats, and a locking element of a length to extend between said seats, said locking element having at the ends keys each adapted to fit into one of the notches in the shaft and into the undercut portions of the adj acent lugs.

9. A locking element comprising a strip of spring metal headed at the ends and having a U-shaped spring clip projecting laterally therefrom between the ends.

10. A device of the character described, comp-rising a. rectangular frame having aligned open seats at the middle of the ends thereof, lugs beside said seats and undercut on the inner sides, a shaft resting in said seats, a locking device extending lengthwise of the frame and fitting at its ends across said shaft and into the undercut portions of the lugs, ears projecting from the ends of the frame opposite said seats, and a feeding device fastened to said ears.

In testimony whereof, I sign this specification.

FREDERICK H. M. HART. 

